package com.lbj.googleplay.googleplay100.manager;

public class DownloadManager {

       private static DownloadManager manager;

       public static  DownloadManager getInstance(){

           if (manager==null){
               synchronized (DownloadManager.class){
                   if (manager==null){
                       manager = new DownloadManager();
                   }
               }
           }
           return manager;
       }

}
